CLICKING NOISE IN THE REAR

When I first start to drive my car I hear a clicking noise coming from the rear of the car. As I accelerate the clicking noise starts to click faster until it reaches a constant roaring sound. This noise eventually calms down to the point I can't hear it anymore once i've been driving the car for a while but sometimes when I hit a bump I can hear the noise as the rear suspension moves up and down. The car has auto leveling suspension in the rear. The rear strut on the passenger side doesn't work qiute as properly as it should to me. It bounces a little more than the struut on the rear driver side. Can you help me pinpiont the problem?